feat: also check if the maximum bet amount is available

Also check if the maximum bet amount is available before sending a request, in case that the service is not using the kelly criterion. If the sum of the maximum bet amount and the mech price cannot be covered, then wait until the safe is refilled.

packages/valory/skills/decision_maker_abci/behaviours/decision_request.py

@@ -116,8 +116,9 @@ def n_slots_supported(self) -> bool:
 
     @property
     def xdai_deficit(self) -> int:
-        """Get the amount of missing xDAI for sending the request."""
-        return self.price - self.wallet_balance
+        """Get the amount of missing xDAI for sending the request plus betting the maximum amount."""
+        max_bet_amount = 0 if self.params.using_kelly else self.params.max_bet_amount
+        return (self.price + max_bet_amount) - self.wallet_balance
 
     @property
     def multisend_optional(self) -> bool:
@@ -207,10 +208,14 @@ def _check_unwrap(self) -> WaitableConditionType:
             yield from self.wait_for_condition_with_sleep(self._build_unwrap_tx)
             return True
 
-        self.context.logger.warning(
-            "The balance is not enough to pay for the mech's price. "
-            f"Please refill the safe with at least {self.wei_to_native(missing)} xDAI or wxDAI."
-        )
+        balance_info = "The balance is not enough to pay for the mech's price"
+        refill_info = f". Please refill the safe with at least {self.wei_to_native(missing)} xDAI or wxDAI."
+        if not self.params.using_kelly:
+            balance_info += " and place the maximum bet amount"
+            refill_info += (
+                " Alternatively, you could decrease the configured bet amounts."
+            )
+        self.context.logger.warning(balance_info + refill_info)
         self.sleep(self.params.sleep_time)
         return False